12420420347 has 2 divisors, whose sum is σ = 12420420348. Its totient is φ = 12420420346.

The previous prime is 12420420323. The next prime is 12420420401. The reversal of 12420420347 is 74302402421.

12420420347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12420420347 - 2³⁰ = 11346678523 is a prime.

It is not a weakly prime, because it can be changed into another prime (12420420307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6210210173 + 6210210174.

It is an arithmetic number, because the mean of its divisors is an integer number (6210210174).

Almost surely, 2^12420420347 is an apocalyptic number.

12420420347 is a deficient number, since it is larger than the sum of its proper divisors (1).

12420420347 is an equidigital number, since it uses as much as digits as its factorization.

12420420347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 29.

Adding to 12420420347 its reverse (74302402421), we get a palindrome (86722822768).

The spelling of 12420420347 in words is "twelve billion, four hundred twenty million, four hundred twenty thousand, three hundred forty-seven".